package com.planet_ink.coffee_mud.Areas;
import com.planet_ink.coffee_mud.core.interfaces.*;
import com.planet_ink.coffee_mud.core.*;
import com.planet_ink.coffee_mud.core.collections.*;
import com.planet_ink.coffee_mud.Abilities.interfaces.*;
import com.planet_ink.coffee_mud.Areas.interfaces.*;
import com.planet_ink.coffee_mud.Areas.interfaces.GridZones.XYVector;
import com.planet_ink.coffee_mud.Behaviors.interfaces.*;
import com.planet_ink.coffee_mud.CharClasses.interfaces.*;
import com.planet_ink.coffee_mud.Commands.interfaces.*;
import com.planet_ink.coffee_mud.Common.interfaces.*;
import com.planet_ink.coffee_mud.Exits.interfaces.*;
import com.planet_ink.coffee_mud.Items.interfaces.*;
import com.planet_ink.coffee_mud.Libraries.interfaces.*;
import com.planet_ink.coffee_mud.Locales.interfaces.*;
import com.planet_ink.coffee_mud.MOBS.interfaces.*;
import com.planet_ink.coffee_mud.Races.interfaces.*;

import java.util.*;

/*
   Copyright 2006-2016 Bo Zimmerman

   Licensed under the Apache License, Version 2.0 (the "License");
   you may not use this file except in compliance with the License.
   You may obtain a copy of the License at

	   http://www.apache.org/licenses/LICENSE-2.0

   Unless required by applicable law or agreed to in writing, software
   distributed under the License is distributed on an "AS IS" BASIS,
   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
   See the License for the specific language governing permissions and
   limitations under the License.
*/
public class StdGridArea extends StdArea implements Area, GridZones {

	@Override public String ID(){	return "StdGridArea";}
	public final static String ZEROES="0000000000";
	protected int xSize=100;
	protected int ySize=100;
	protected int yLength=3;

	@Override
	public CMObject newInstance()
	{
		if(CMSecurity.isDisabled(CMSecurity.DisFlag.FATAREAS)
		&&(ID().equals("StdGridArea")))
		{
			final Area A=CMClass.getAreaType("StdThinGridArea");
			if(A!=null)
				return A;
		}
		return super.newInstance();
	}

	@Override
	public String getNewRoomID(Room startRoom, int direction)
	{
		final XYVector xy=posFromRoomID(startRoom);
		int xChange=0;
		int yChange=0;
		switch(direction)
		{
		case Directions.NORTH: yChange-=1; break;
		case Directions.SOUTH: yChange+=1; break;
		case Directions.EAST: xChange+=1; break;
		case Directions.WEST: xChange-=1; break;
		case Directions.NORTHWEST: yChange-=1; xChange-=1; break;
		case Directions.NORTHEAST: yChange-=1; xChange+=1; break;
		case Directions.SOUTHWEST: yChange+=1; xChange-=1; break;
		case Directions.SOUTHEAST: yChange+=1; xChange+=1; break;
		default: break;
		}
		if(isMyGridChild(startRoom))
		{
			// PERFECT condition
			if((xy!=null)&&(xy.x>=0))
			{
				String newID=roomIDFromPos(xy.x+xChange,xy.y+yChange);
				if((newID!=null)&&(newID.length()>0))
				{
					newID=Name()+"#"+newID;
					final Room duplicateRoom=getRoom(newID);
					if((duplicateRoom==null)
					||(duplicateRoom==startRoom))
						return newID;
				}
			}
		}
		// next in line
		for(int x=0;x<xGridSize();x++)
			for(int y=0;y<yGridSize();y++)
			{
				final Room R=getRoom(Name()+"#"+roomIDFromPos(x,y));
				if(R==null)
					return Name()+"#"+roomIDFromPos(x,y);
			}
		// not even a next in line exists!
		return "";
	}

	protected String roomIDFromPos(int x, int y)
	{
		if((x<0)||(y<0)||(y>=yGridSize())||(x>=xGridSize()))
			return null;
		final String s=Integer.toString(y);
		if(x>0)
			return x+(ZEROES.substring(ZEROES.length()-(yLength-s.length())))+s;
		return s;
	}
	@Override
	public Room getGridChild(int x, int y)
	{
		final String roomID=roomIDFromPos(x,y);
		if(roomID==null)
			return null;
		return getRoom(Name()+"#"+roomID);
	}
	@Override
	public XYVector getRoomXY(String roomID)
	{
		if(roomID.length()==0)
			return null;
		if(roomID.endsWith(")"))
		{
			final int y=roomID.lastIndexOf("#(");
			if(y>0)
				roomID=roomID.substring(0,y);
		}
		final int x=roomID.indexOf('#');
		if(x<0)
			return null;
		if(!roomID.substring(0,x).equalsIgnoreCase(Name()))
			return null;
		roomID=roomID.substring(x+1);
		if(!CMath.isNumber(roomID))
			return null;
		final int len=(""+ySize).length();
		if(roomID.length()<=len)
			return new XYVector(0,CMath.s_int(roomID));
		final String xStr=roomID.substring(0,roomID.length()-len);
		String yStr=roomID.substring(roomID.length()-len);
		while(yStr.startsWith("0"))
			yStr=yStr.substring(1);
		final XYVector xy = new XYVector(CMath.s_int(xStr),CMath.s_int(yStr));
		if((xy.x<0)||(xy.y<0)||(xy.x>=xGridSize())||(xy.y>=yGridSize()))
			return null;
		return xy;
	}
	@Override public XYVector getRoomXY(Room room){ return posFromRoomID(room);}
	protected XYVector posFromRoomID(Room loc)
	{
		if(loc==null)
			return null;
		String roomID=loc.roomID();
		if(roomID.length()==0)
			roomID=getGridChildCode(loc);
		return getRoomXY(roomID);
	}
	@Override public int getGridChildX(Room loc){return posFromRoomID(loc).x;}
	@Override public int getGridChildY(Room loc){return posFromRoomID(loc).y;}
	@Override public String getGridChildCode(Room loc){ return CMLib.map().getExtendedRoomID(loc);}
	@Override public Room getRandomGridChild(){ return super.getRandomProperRoom();}
	@Override public Room getGridChild(String childCode){return CMLib.map().getRoom(childCode);}
	@Override public boolean isMyGridChild(Room loc){ return super.isRoom(loc);}
	@Override public int xGridSize(){ return xSize;}
	@Override public int yGridSize(){ return ySize;}
	@Override public void setXGridSize(int x){xSize=x;}
	@Override public void setYGridSize(int y){ySize=y; yLength=Integer.toString(ySize).length();}
	@Override
	public Room getGridChild(XYVector xy)
	{
		if(xy==null)
			return null;
		return getGridChild(xy.x,xy.y);
	}
}
